I have a capacitor start/capacitor run 2KW motor ([email protected]). I have a small board with a rc circuit (for 2s timming - enough for motor start) activating a relay that connects/disconnects the start capacitor. I'm trying to replace the relay. Are there any circuits to replace the relay with triacs/thyristors on this configuration? I've tried a "simple replace" with a triac (40A & 1200V) and a rc snubber. Triac turns on the start capacitor, but when i remove the signal from the gate (by the optocoupler, 2s later) the triac blows. I believe that its some kind of dc/dt or di/dt problem, but on this configuration (inductance from the motor plus 2 capacitors, i don't know where to start). Thanks in advance for any hints.